Recommended Settings For Diagnostic Limit Values; Limit Values For The Coil Resistance - ABB ProcessMaster Commissioning Instruction

8.3

Recommended settings for diagnostic limit values

In the "Diagnostics / Diagnosis Control / ..." menu, limit values for the diagnostic values can be
specified.
In order to simplify their setting, recommendations for the individual limit values are shown here.
The values indicated are only intended as a rough guide and may need to be adapted in line
with on-site conditions.
8.3.1

Limit values for the coil resistance

Coil resistance monitoring is switched off (factory default).
Monitoring can be switched on in the "Diagnostics / Diagnosis Control / Sensor
Measurements" menu.
Parameter
Coil R. Min Alarm
Coil R. Max Alarm
The coil resistance depends on the fluid temperature T
T
medium
-40 °C
(-40 °F)
-20 °C
(-4 °F)
(32 °F)
20 °C
(68 °F)
60 °C
(140 °F)
90 °C
(194 °F)
130 °C
(266 °F)
180 °C
(356 °F)
CI/FEX300/FEX500-EN
Coil R. Min Alarm
Factory for Fingerprint
(coil resistance) x 0.71
Factory for Fingerprint
(coil resistance) x 0.81
0 °C Factory for Fingerprint
(coil resistance) x 0.9
Factory for Fingerprint
(coil resistance) x 0.95
Factory for Fingerprint
(coil resistance) x 1.19
Factory for Fingerprint
(coil resistance) x 1.28
Factory for Fingerprint
(coil resistance) x 1.43
Factory for Fingerprint
(coil resistance) x 1.62
Factory setting
0 ohms
1000 ohms
Parameter
FEX300, FEX500
Extended diagnostic functions
and the ambient temperature.
medium
Coil R. Max Alarm
Factory for Fingerprint
(coil resistance) x 0.79
Factory for Fingerprint
(coil resistance) x 0.89
Factory for Fingerprint
(coil resistance) x 1.0
Factory for Fingerprint
(coil resistance) x 1.05
Factory for Fingerprint
(coil resistance) x 1.31
Factory for Fingerprint
(coil resistance) x 1.42
Factory for Fingerprint
(coil resistance) x 1.58
Factory for Fingerprint
(coil resistance) x 1.79
EN - 71